The accident occurred on Tuesday morning. At least three people were taken to hospital by ambulance, according to several media outlets. The extent of their injuries is unclear.
A truck overturned in the accident and is blocking traffic. The road is closed in both directions.
The forecast said the closed section would open at 9 p.m., but the new forecast says the road will not open until four hours later.
It's been a larger salvage operation than expected, says Daniel Mossberg, press communicator at the Swedish Transport Administration.
He says a lot of cleaning will also be done. In addition, the central barrier needs to be repaired.
Traffic is being diverted via the much narrower Road 583.
The police have filed a report for negligent driving and causing bodily harm.
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